About ClearSKY Polygon Tools

Free, privacy-first tools to draw, convert, and validate polygons (WKT, GeoJSON, Shapefile, CSV, WKB). Everything runs in your browser. If you sign in, it’s only to save your AOIs or send them to the ClearSKY Dashboard for ordering.

Need help using the tool? Read the FAQReport a bug / request a feature
Open the EditorGo to ClearSKY Dashboard

What the Polygon Tools are — and why they exist

The ClearSKY Polygon Tools are a free, standalone WKT/GeoJSON editor for everyone — not just our customers. Draw or clean up AOIs, validate geometry, and export exactly what you intend to order. Perfect for field parcels, forest stands, and project sites.

100% browser-based (no uploads)
WKT, GeoJSON, Shapefile, CSV, WKB support
Save AOIs; send to Dashboard when ready

All free tools

WKT → GeoJSON

Convert WKT to GeoJSON instantly.

GeoJSON → WKT

Normalize GeoJSON to valid WKT.

Shapefile → GeoJSON

Drop a .zip and get GeoJSON.

GeoJSON → Shapefile

Export zipped Shapefiles.

WKT → CSV

CSV with area, centroid, bbox & topology.

CSV → WKT

Detect WKT / lon–lat / bbox columns.

WKT → WKB

Get WKB (hex/base64 or .wkb).

WKB → WKT

Decode EWKB/WKB to WKT.

WKT → Shapefile

One-per-line WKT to .zip.

Shapefile → WKT

One WKT per feature.

WKT Validator

Check rings, holes & duplicates.

FAQ

How to use the editor & converters.

Ordering with ClearSKY (data fusion)

Order in the Dashboard

Use prepped AOIs—or click Send to Dashboard in the editor—to request cloud-free composites or tile/minitile deliveries, track progress, and manage outputs.

Open dashboard.clearsky.vision

Order via the API

Automate at scale: submit AOIs and control parameters through the API. Batch parcels, integrate with your systems, and monitor jobs programmatically.

Visit api.clearsky.vision

Coverage & billing rules (BBoxes)

  • All bounding boxes ≥ 1 km² are valid for ordering.
  • Any bounding box < 1 km² is billed as 1 km².
  • We accept custom polygons at order time; we convert them to BBoxes for pricing/delivery.
  • Enterprises can contractually order without BBoxes — contact us.

Accepted order formats

  • Accepted: GeoJSON and WKT.
  • Not used for orders: Shapefile — convert with our tools if needed.
Tip: Convert legacy Shapefiles with Shapefile → GeoJSON, or generate Shapefiles via GeoJSON → Shapefile.

Benefits of the Full Editor

Draw & Edit

Lasso-select, move vertices, add/remove rings.

Dissolve & Union

Merge adjacent parts for cleaner AOIs.

Split & Subtract

Cut polygons or remove unwanted overlap.

Simplify & Buffer

Meter-based simplify; buffer in km.

Validate Topology

Fix open rings, duplicates, intersections.

Overlays & Export

XYZ tiles, GeoJSON, GeoTIFF; export WKT/GeoJSON/Shapefile.

Typical workflow

  1. 1) Prepare AOIs

    Draw or import parcels. Validate rings & duplicates.

  2. 2) Right-size

    Simplify, split/dissolve, or subtract to match coverage.

  3. 3) Send & Order

    Export GeoJSON/WKT or send to the Dashboard/API.

Agritech & Farming

Batch parcel prep for indices, scouting, and season-long monitoring.

Forestry & Land Use

Clean AOIs for canopy, biomass, and disturbance analytics.

Insurance & Risk

Consistent AOIs for underwriting, claims, and event analysis.

Credits (open-source)

All trademarks and product names are the property of their respective owners.

Want to order satellite data for your polygons?

ClearSKY uses data fusion to deliver cloud-free imagery and robust time series at scale. Upload your polygons and place orders in minutes.

Open ClearSKY Dashboard